> The author assumes that humans can't feel the difference between 100 and 200 ms latency The author does not believe that, the section you’re referring to is

> The author assumes that humans can't feel the difference between 100 and 200 ms latency The author does not believe that, the section you’re referring to is titled “counter-arguments to common arguments that latency doesn’t matter”. If you read the paragraphs that follow you will see a rebuttal to the argument that 100ms is insignificant.